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Note 7 - Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

Total

  

Level 1

  

Level 2

  

Level 3

 

As of June 30, 2020

                

Financial assets:

                

Deferred compensation plan

 $4,655  $4,018  $637  $- 

Foreign currency forward contracts

  76   -   76   - 

Total financial assets

 $4,731  $4,018  $713  $- 
                 

Financial liabilities:

                

Foreign currency forward contracts

 $(261) $-  $(261) $- 
                 

As of December 31, 2019

                

Financial assets:

                

Deferred compensation plan

 $5,150  $4,268  $882  $- 
                 

Financial liabilities:

                

Foreign currency forward contracts

 $(138) $-  $(138) $-